Rankings · 2025

Least fuel-efficient midsize cars of 2025

Among 35 midsize cars from 2025 in the database (one per model family), the 2025 BMW M5 Sedan is the least fuel-efficient at 16.8 l/100km, against a class average of 9.8 l/100km. The spread from best to worst is 4.9–16.8 l/100km. Electric vehicles are ranked separately by range.

Ranked35one per model family
Average9.8 l/100km
Leader2025 BMW M5 Sedan

Top 10

12025 BMW M5 Sedan16.8 l/100km
22025 Cadillac CT5 V15.7 l/100km
32025 Audi RS 713.8 l/100km
42025 BMW M8 Competition Gran Coupe13.8 l/100km
52025 Mercedes-Benz AMG S63 E Performance13.1 l/100km
62025 BMW Alpina B8 Gran Coupe12.4 l/100km
72025 BMW M850i xDrive Gran Coupe12.4 l/100km
82025 Bentley Flying Spur12.4 l/100km
92025 Lexus LS 500 AWD11.2 l/100km
102025 Subaru Wrx11.2 l/100km

Full ranking

#VehicleCombinedvs avgCO2WeightRecallsNCAP
12025 BMW M5 Sedan16.8 l/100km+71%177.1 g/km2,505.2 kg——
22025 Cadillac CT5 V15.7 l/100km+60%364.7 g/km1,948.2 kg——
32025 Audi RS 713.8 l/100km+40%334.3 g/km2,505.2 kg1—
42025 BMW M8 Competition Gran Coupe13.8 l/100km+40%321.2 g/km2,474.3 kg——
52025 Mercedes-Benz AMG S63 E Performance13.1 l/100km+33%189.5 g/km———
62025 BMW Alpina B8 Gran Coupe12.4 l/100km+26%284.6 g/km2,703.4 kg——
72025 BMW M850i xDrive Gran Coupe12.4 l/100km+26%284.6 g/km2,703.4 kg——
82025 Bentley Flying Spur12.4 l/100km+26%100 g/km2,699.8 kg1—
92025 Lexus LS 500 AWD11.2 l/100km+14%259.7 g/km2,222.6 kg——
102025 Subaru Wrx11.2 l/100km+14%262.2 g/km2,090.2 kg—5
112025 Audi S510.7 l/100km+9%246.7 g/km2,115.1 kg2—
122025 Audi S610.7 l/100km+9%253.5 g/km2,434.9 kg1—
132025 Audi S710.7 l/100km+9%253.5 g/km2,434.9 kg1—
142025 BMW 550e xDrive Sedan9.8 l/100km0%83.9 g/km2,219.9 kg——
152025 BMW 840i Gran Coupe9.8 l/100km0%228.7 g/km1,935 kg——
162025 Hyundai Elantra N9.8 l/100km0%227.4 g/km1,520 kg1—
172025 Audi A6 quattro9.4 l/100km-4%221.2 g/km2,269.8 kg2—
182025 Audi A7 quattro9.4 l/100km-4%221.2 g/km2,434.9 kg1—
192025 Lexus ES 3509.4 l/100km-4%215.6 g/km1,664.7 kg—5
202025 Alfa Romeo Giulia AWD9.1 l/100km-7%216.2 g/km1,836.1 kg1—
212025 Audi A5 Sportback S line quattro9.1 l/100km-7%210.6 g/km1,940 kg——
222025 Subaru Legacy AWD9.1 l/100km-7%209.4 g/km1,649.3 kg—5
232025 Volvo S90 B6 AWD9.1 l/100km-7%211.9 g/km2,160.9 kg——
242025 BMW 540i xDrive Sedan8.4 l/100km-15%190.8 g/km2,473 kg——
252025 Nissan Altima AWD8.4 l/100km-15%197 g/km1,574.4 kg25

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How this ranking works

Values come from FuelEconomy.gov, EPA certification data and NHTSA records shown on each vehicle's page. Only the best-placed version of each model family is listed, so one model cannot fill the list. Electric vehicles are excluded from fuel-consumption rankings and ranked by range instead.

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